Acid-tank.



` W. SHERRATT.

ACID TANK.

AAAAAAAAAAAAAAAAAAAAAAAA s. l 1 25;, l 93. Patented Jan. 19, 1915.

2 SHEETS-SHEET 2.

UTE@

WALTER- S'IERRA'I'T, OF TRNTG, ONTARIO, CANADA.

Application filed May 7, l93.

T 0 all whom 'it may concern.

' Be it known that I, lvailrsn SHERRATT, a

subjectof the Kingy oli Great Britain, resi dent ot' (l2 Dixon avenue,in the city of Toronto, county of York, Province of Ontario, in theDominion of Canada, engineer, have invented certain new and usefulimprove ments in field-'Faults1v of which the followine; is aspccilication.

The invention relates to improvements in acid tanks, as described in thepresent specification and illustrated in the accompanying drawings thatform part ot' the saine.

The invention consists essentially in the novel construction andarrangement of parts whereby the parts are securely held together liquidtight without the use ,of meta-l pieces in the joints.

rlhe object of the invention is to prolongthe lii'e ol a tank l'orcontaining,r acid by dis-.

pensingr with the usual metal accessories such as nails or bolts, whichare soon eaten aivay by the acid and cause leaking and sometimes totalcollapse oi' the tank.

In the accompanyingl drawings Figure l is avertical transverse section.3 is a side elevation oi: a part of the tank length with one cornerbroken into section. Fig. il is a plan lieiv ot a portiono'l" the lengthol' the tank and Fig. #l is an enlarged sectional perspective vieiv ofone of the joints.

Like numerals ot reference indicate corresponding parte in each figure.

Reierringj to the drawings l the bottom ol the tank comprisimr aplurality o'l thick planks each having` a tapering tongue 2 at one oi?its longitudinal edges and a corresponding tajlcri'ogr groove 3 in, theopposite longitudinal eige, the tongue of one plank snugly fitting;within the groove of the adjacent plank.

lny the perpendicular edges at each side respectively ot said timone andsaid gro-ore, V-shaped recesses i are arrangml-rco that the recesses ot'one plank coincide with the recesses olf the adjacent plank when 'in poition, thus leaving a pair of suliistantiaily diamond shaped holesbetween the a djoininp; edges of said planks one at each side vot thetongue and ,groove and extending the t'ull length of the plank.

In each plank, suitably distanced holes 5 are bored through at intervalsfrom to edge substantially central of the thickness and thereforethrough both the tongue and. groove.

Specification of Letters Patent.

otented dan. 119, i915.

yseran no. 766,171. i

When the planks comprising the tank bottom vare. assembled a length `ofrubber or other suitable resilient material is placed, in ach ot' theholes formed by V-shaped recesses s, said lengths extending from end toeno o the planks. The assembled planks with the holes coinciding.,r arenow placed in a cramp and a u'oodenitie rod 6 is threaded in said holesright through the bottom from outside. edge to outside edge, the endsbeing split and Wedges '7 knocked into said splits. Alifter all otl thetie rods G have been inserted in this Way, which has the e'liect ofcompressing the rubber lengths 4a and thereby n'mking the joint liquidtight, the cramp is taken oli', as said planks are just as tightly heldtogether by thc tie rods.

'lhe sides i) and ends 10 are composed of I pla ks held together by thetie rods 11 in exactly the same manner as the bottom 1 the joints 12being of the same character as the joints in. said bottoni, the lowerplanks of said lsides and ends cach have a depending tong-ue 8, so thatreally said tongues form a ependingg llango all the `way around thelmundary of the tank. correspondinsr grooves lil boing out into theupper surface ol.2 the bottom l to accommodate said tongues and rubbm.'lengths vinterposed between the nieeting' parts of each side tonp'ue andgroove in lhe same manner as that previously describedx V i lloodencross pins 'le extend at intervals through corresjmndinl` holes .in thesides, ends and bottom and through the tie rods ot `said sides, ends andbottom so that said rods have an additional lock above besides thewedges7.

shown in the drawings the sides 9 eX tend beyond the ends 'lll at l5and, outside of said ends, braces 16 extend across from side to side.holding said sides together by the dove tailed joints l? ,it is notthought 4that an;v tongue and groote joints are necesd sarjbetween thevertical side edges of the ends and the adjacent inner tace of thesides.r but necessary there may be arranged a joint similar to thatbetween the lower ed "e oilE the sides and enden/'ith the bottom 1.llloiveier all the corners onthe inside of the tank filled up by thetriangular corner piece 15%; secured to the adjacent sides, ends andbottom by Wooden dowel pins 19 each of said corner pieces 'i8 preferablyhaving lJ-sha'ped recess in its right angular in which substantiallysquare sec-

